Lawn sprinkler



G. L. BALDWIN LAWN S PRI NKLER Filed Aug. 2. 1922 *v Z x) d a S! d E if j j IN VEN TOR. GIE/841.0 L. Cisa/ D//W/v.

A TTORNEY Patented Aug. 2l, 1928.

UNITED STATES GERALD L. BALDWIN, OF SAN DIEGO, CALIFORNIA.

LAWN SPRINKLE'R.

Application tiled August 2, 1922. Serial No. 579,218.

My invention relates to lawn sprinklers l and the objects of' my invention are': first,

to provide allawn sprinkler more particu-- larly for lawn sprinkling systems which,

may be positioned below the level of the ground so that it will not interfere with` the mowing of the lawn and provided with a rotatably mounted discharge portion adapted to automatically rise by the water pressure when turned on so that the spray clears the grass; second, to provide a.

sprinkler of this class in which the sprayr of water discharged therefrom will be substantiallyf uniform; third, to provide a novel spray adjusting means in connection with my lawn sprinkler; fourth, to provide a `novelly constructed sprinkler of this class and fifth, to provide 'a lawn sprinkler which is very simple and economical of construction, durable, eiiicient, easy to install, adjust and operate, and which will not readily deteriorate or get out of order.`

lVith these and other objects in vView as will appear hereinafter, my invention consists of certain novel featuresof construction,'combination and arrangement of parts and portions d as will be hereinafter described in detail and particularly set forth in the appended claims, reference being had to the accompanying drawings and to the characters of reference lthereon which form apart of this applicationin which- Figure l is a side elevational view of -my lawnsprinkler connected to a water supply line buried in the ground below the grass, showing by dotted lines the lawn sprinklerI in operative position, Fig. 2 is a sectional view thereof showing the nozzleportion through the centers of opposing spray slots with parts and portions in elevation to facilitate the illustration and the remaining, lower portions taken on the center line and at right angles to Fig. 1

but showing by solid lines the sprinkler in operative position, secured to the pipe fitting shown fragmentarily .and showing by dotted lines the receded position of the nozzle member of the sprinkler, and Fig. 3 is a plan View thereof.

Like characters of reference referto similar parts and portions throughout the several views of the drawings.

The easing member 1, pipe tting 2, nozzle member 3 andthe screw 4 constitute the principal parts and portions of my lawn sprinkler structure.

The casing 1 is cylindrical in shape and provided lwith a longitudinal central hole 1* and with internal threads lb at its lower.

end. Said casing is also provided with a polygonally shaped portion 1 kat its lower end to facilitate the screwin Aof the casing onto the pipe fitting 2. Said pipe fit-` with an inner 'annular slightly recedingv shoulder ,1d at the other end from the internally threaded' portion and `with a smaller concentric hole le in the same end of the casing. A `cylindrically shaped plunger` forming the nozzle member 3 provided with a central hole 3a and with an. enlarged portion 3l at'one end is reciprocall mounted in' `the casing" 1, limited at its ower end by the shoulder 2a formed by screwing the pipe. fitting 2 into" the casing 1 and at its upper, end by the shoulder 1d in the casing `l. Said plunger `3 is provided at its upper end with a -plurality of narrow slots 3c extending from the central hole 3 to the outside thereof and are preferably positioned at an angle with the radial line extending` through the axisof the plunger so as to'impart to theA plunger a revoluble motion when the water is forced through the slots therein. A screw 4,1pref-i erably provided with a countersunk head, is provided at the upper slotted portion of the plunger 3 to adjust the effective size of the openings and therefore the angle of the spray and amount of water discharged.

Though I have shown and described a particular construction, combination and arrangement of parts and portions I do not wish to be limited to' this particular construction, combination and arrangement but desire to include in the scope of my invention the construction, combination and arinto the supply line connected to my sprinkler the discharge openings will be raised above the surrounding area and spread the water uniformly; that I have provided novel spray and volume adjusting means and that I have provided a lawn sprinkler which is very simple and economical of construction, durable, eflicient, easy to install, adjust and operate and which will not readily deteriorate or get out of order.

Having thus described my invention what I claim as new and desire to secure by Letters Patent is:

l. In a lawn sprinkler, a hollow, reciprocally mounted plunger' provided with relatively long, narrow, partially vertical and partially horizontal. angularly positionedv member provided with a central threaded aperture and with relatively long, narrow `slots'opening into said aperture and directed outwardly and upwardly o n an angle to the vertical axis of said nozzle member from the inner portion of said nozzle at its upper end, and a spray adjusting screw mounted in said aperture for adjusting the effective size and shape of the inlet to said slots.

3. In a lawn sprinkler, a hollow plunger 2. In a lawn sprinkler, a hollow nozzle' provided with relatively long, narrow, partialljv vertical. and partiallyT horizontal slots directed outwardly on an angle to the. vertieal axis of said plunger from the inner portion thereof, and a spray adjusting screw mounted centrally on the end of said plunger contiguous to said slots.

4. In a lawn sprinkler, a hollow revolubly mounted plunger provided with relatively long, narrow, partially vertical and partially horizontal, angularly positioned slots eX- tending outwardly from the middle portion thereof whereby a revoluble motion is imparted to said plunger by the etilux of the water from said slots. and a bevel-headed screw mounted centrally in said plunger contiguous to said slots positioned so that the water impinges upon said head to regulate and direct the flow of water from said v mounted centrally in said tubular member contiguous to said slots positioned so that the water i-mpinges upon said head to regulate and direct the flow of water from said slots, and means for adjusting said screw.

In testimony whereof, I have hereunto set my hand at San Diego, California, this 27th day of July, 1922.

GERALD L. BALDWIN. 

